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Finding the Fourth Proportional to 362,389.64, 543,344.58 and 172,879.28

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Solution

The fourth proportional to 362,389.64, 543,344.58 and 172,879.28 is: 259,204.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,389.64 : 543,344.58 = 172,879.28 : x
  2. Step 2: Convert to fraction form
    362,389.64/543,344.58 = 172,879.28/x
  3. Step 3: Cross multiply
    362,389.64x = 543,344.58 × 172,879.28
  4. Step 4: Simplify right side
    362,389.64x = 93,933,019,782.30
  5. Step 5: Solve for x
    x = 93,933,019,782.30/362,389.64
  6. Step 6: Final answer
    x = 259,204.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.